Requirements based on Subject Scopes/Subject Domains

[mwherman2000]

Additional requirements based on Subject Scopes/Domains:

1. The scope/domain of the types of entities/subjects addressed/named by a particular method
2. Estimated size of each scope/domain (number of individual entities)
3. Estimate of the daily transaction volume of each scope/domain (as an indicator of market size/opportunity)

For example:

MWH> What is an estimate of the number of business documents exchanged every day in the world?

ChatGPT> The number of business documents exchanged daily worldwide is enormous, reflecting the scale of global commerce and communication. While exact statistics are difficult to pinpoint, industry estimates and studies suggest:

1. Global Estimates:

The IDC (International Data Corporation) estimated in recent years that the world generates over 330 billion emails per day, many of which are business-related.

E-invoicing and electronic documents alone account for over billions of exchanges daily. For example, the Billentis Report estimates over 550 billion e-invoices and related business documents are exchanged annually, averaging around 1.5 billion daily.

2. Physical Documents:

Traditional paper-based business documents (contracts, reports, forms, etc.) add significantly to this number, particularly in industries still transitioning to digital formats.

3. Document Types:

Examples of business documents include invoices, purchase orders, contracts, shipping documents, tax forms, and internal reports.

Conclusion:

A reasonable estimate places the daily exchange of business documents (both digital and physical) in the billions, likely ranging from 3 to 5 billion daily, depending on the context and medium of exchange.

MWH> How many people fly every day?

ChatGPT> On an average day, approximately 2.9 million airline passengers travel worldwide, with the United States alone accounting for about 45,000 flights serving domestic and international travelers. Globally, estimates suggest that the number of daily flights surpasses 100,000, carrying millions of people between various destinations.

MWH> What is an estimate of the average number of car parts manufactured per day?

ChatGPT> The global automotive industry manufactures an immense number of car parts daily. Estimates suggest that over 30 million individual components are produced each day. This figure reflects the large variety of parts needed for vehicles, including engines, transmissions, batteries, electronics, and other structural and functional components.

Key manufacturing hubs, such as China, account for a significant share due to their dominant automotive market and supply chain capabilities, which also contribute to the high global output. Other major regions include Europe, the United States, and emerging markets like India.

This production volume is driven by both Original Equipment Manufacturer (OEM) demand for new vehicles and the aftermarket for vehicle repairs and upgrades.

MWH> What is an estimate of the number of drivers licenses in the world?

ChatGPT> The number of driver's licenses worldwide is estimated to be around 1.8 to 2 billion. This estimate is based on the global population of approximately 8 billion and varying rates of car ownership and license issuance across regions. In developed countries, where car ownership is higher, a significant majority of adults hold a driver’s license. For example, in the U.S., over 87% of adults have a license. However, in developing nations, this proportion is typically much lower due to differences in economic status and urbanization.

MWH> What is an estimate of the number of times per day that a people in the world have to present their driver's license for identification purposes?

ChatGPT> Estimating the number of times driver's licenses are presented daily for identification worldwide is challenging due to varying practices across regions and uses beyond driving. However, an educated approximation can be derived based on key scenarios where licenses are commonly required:

1. Traffic Stops and Checkpoints:

Globally, billions of licensed drivers encounter routine traffic stops or checkpoints annually. For instance, in the U.S. alone, about 50,000 vehicle stops occur daily, many requiring license presentation.

2. Vehicle Rentals, Banking, and Identification:

Driver's licenses are widely used as primary identification for services like car rentals, bank transactions, and even age verification. With billions of transactions daily in banking and retail, a fraction involves license presentation.

3. Public and Private Sector Usage:

Many countries mandate driver's licenses as valid IDs for administrative purposes. For example, countries like the U.S. and Canada heavily rely on them in daily operations.

Estimated Total:

Considering these contexts:

If even 5-10% of the 2 billion license holders globally present their licenses daily, the total ranges between 100 million to 200 million instances per day.

This estimate may vary by region, urbanization, and dependence on licenses for non-driving activities. If you want data on a specific country or context, let me know!

MWH> How many valid passports are there in the world and how many times per day are they presented for identification purposes?

ChatGPT> As of 2023, there were approximately 160.7 million valid U.S. passports alone, and global estimates suggest over 800 million valid passports worldwide. This reflects an increase in international travel and the expansion of passport issuance globally.

Regarding daily presentations for identification, passports are commonly used at border crossings, airports, and official transactions requiring high-security ID verification. With over 2.3 million people crossing international borders daily, passports are presented multiple times during travel (e.g., at departure and arrival). Additionally, passports are sometimes used for banking, legal, or other high-security processes, likely resulting in tens of millions of daily uses globally.

MWH> How many different pizza toppings are there and how many servings of these toppings are consumed daily in the world?

ChatGPT> Number of Different Pizza Toppings

There are thousands of potential pizza toppings worldwide, ranging from classic options like pepperoni and mushrooms to more unusual regional choices such as:

Traditional Toppings: Pepperoni, sausage, mushrooms, onions, and peppers.

Regional Specialties:

Japan: Squid, eel, and mayonnaise.

Brazil: Green peas, corn, and bananas.

India: Paneer, curry chicken, and tandoori spices.

Global Gourmet: Truffle oil, caviar, and exotic cheeses like gorgonzola.

While a comprehensive count is difficult due to constant culinary innovations, estimates suggest at least 2,000–3,000 distinct toppings exist globally, considering all cultural and gourmet variations.

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Number of Topping Servings Consumed Daily

Pizza consumption patterns help estimate the servings of toppings consumed:

1. Pizza Consumption:

Daily global consumption: Approximately 13.7 million pizzas.

Servings per pizza: Each pizza typically serves 2–3 people.

This results in roughly 27–41 million pizza servings daily.

2. Topping Servings:

Most pizzas feature 3–4 toppings on average.

This leads to 81–164 million individual servings of toppings consumed daily, assuming a balanced distribution.

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Pizza's versatility and cultural integration ensure its enduring global popularity, with toppings evolving to reflect local tastes and trends.

[mwherman2000]

If anyone would like to test/evaluate this approach, I've uploaded a spreadsheet to Google Docs: (this is still the old matrix)

https://docs.google.com/spreadsheets/d/1YTZyn2bfS2dQq9pBK1pIE71OHPUWWuIG/edit?usp=sharing&ouid=114156804688997110176&rtpof=true&sd=true

• Editing (and I presume commenting) is enabled.
• Add your DID Method name into the appropriate cell(s).
• Add any appropriate rows and/or columns as required.
• Add comments for improvement.

More background/details can be found here:

• STRAWMAN: Web 7.0/TDW DID Method Clusters Model 0.1 (Solution Concept) #3
• Any existing DID method (subject) taxonomies besides what appears in the DID Use Case document? #2
• https://hyperonomy.com/2024/11/11/catergories-of-decentralized-identifiers-dids/

This is what the DID Method Clusters spreadsheet currently looks like... (new matrix - sorted by category)

• A bold method is the model method or exemplar for the particular cluster (cell).
• A method can be a exemplar for 1 or many clusters.
• This list of DID method categories is just an example. A complete taxonomy will likely be a 2-3 level hierarchy. The parent categories for these examples might include: Live Things, Inanimate Things, Abstract Things, Digital Things, Business Things, etc. etc.
• More than one exemplar per cluster is permitted.

[mwherman2000]

Related to the above, the subject scope/subject domains are given to us in the DID-CORE specification:

Decentralized Identifiers (DIDs) v1.0 Specification
Reference: https://www.w3.org/TR/did-core/

Decentralized identifiers (DIDs) are a new type of identifier that enables verifiable, decentralized digital identity. A DID refers to any subject (e.g., a person, organization, thing, data model, abstract entity, etc.) as determined by the controller of the DID. In contrast to typical, federated identifiers, DIDs have been designed so that they may be decoupled from centralized registries, identity providers, and certificate authorities.

DID subject
The entity identified by a DID and described by a DID document. Anything can be a DID subject: person, group, organization, physical thing, digital thing, logical thing, etc.

[mwherman2000]

How many flight plans are filed per day across the world?

ChatGPT: On average, approximately 100,000 to 120,000 flight plans are filed daily worldwide. This number includes all types of flights, such as commercial, cargo, general aviation, and military operations.

Commercial flights account for a significant portion, with around 40,000 to 50,000 flights per day.

General aviation flights (private, corporate, and recreational) and cargo operations make up the rest.

The volume can vary based on factors such as weather, day of the week, and seasonal travel peaks.

Air traffic management organizations like ICAO, FAA, and Eurocontrol play key roles in coordinating these operations to ensure safety and efficiency.

[mwherman2000]

I updated the clustering matrix in #14 (comment) to include a Column B taxonomy category column. The values in this column are based on the Web 7.0 did:category DID Method Specification (https://github.com/mwherman2000/TrustedDigitalWeb/blob/master/specifications/did-methods/did-category-1-0-1.md) which in turn is based on the Wikipedia Contents:Categories taxonomy (https://en.wikipedia.org/wiki/Wikipedia:Contents/Categories).

Here is a small sample of the Web 7.0 did:category DID Method taxonomy (from a total 1.4 million DID Methods/Submethods)...